PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The present invention is a method and apparatus for enhanced recovery of petroleum fluids from the subsurface by injection of steam and a hydrocarbon vaporized solvent in contact with the oil sand formation and the heavy oil and bitumen in situ.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.es